I finally saw what happens when you skip the grain filler on oak
I had a client bring in a 1920s oak sideboard for a full refinish about three months ago. The old finish was shellac, totally shot. I stripped it, sanded it down to 180, and went straight to my usual oil-based stain and topcoat. It looked fine when it left the shop. The client just sent me a picture of it today. The finish over the open grain looks rough and pitted, like tiny craters, and it's already starting to feel a bit rough to the touch. I thought the topcoat would fill it, but it clearly didn't. I should have used a paste wood filler before staining. It's a clear lesson that some steps you can't rush or skip, especially on open-pored woods. Has anyone else had a finish fail like this on oak, and how long did it take to show up?